六周的低分子量肝素与12周的华法林用于小牛深静脉血栓症:一个随机的,前性的,开放的标签研究
Michelangelo Sartori1, Matteo Iotti2, Giuseppe Camporese3
1Angiology and Blood Coagulation Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy.
American journal of hematology
|February 20, 2024
概括
对隔离远距离深静脉血栓瘤 (IDDVT) 进行为期6周的低分子量肝素 (LMWH) 治疗效果不如12周的维生素K对抗剂 (VKA) 治疗. 在这个患者队列中,VKA在预防复发性静脉血栓栓塞 (VTE) 方面表现出卓越的结果.
科学领域:
- 心脏病学 心脏病学
- 血液学 血液学 血液学
- 血管医学 血管医学
背景情况:
- 目前的指导方针建议为隔离远部深静脉血栓症 (IDDVT) 提供为期3个月的抗凝剂治疗.
- 较短的治疗持续时间在临床实践中很常见,需要评估替代方案.
- 低分子量肝素 (LMWH) 和维生素K对抗剂 (VKA) 是标准的抗凝剂.
研究的目的:
- 为了比较6周的LMWH疗法与12周的VKA疗法对IDDVT的疗效和安全性.
- 与标准VKA治疗相比,在6周内评估中剂量LMWH的非劣势性.
- 评估复发性静脉血栓栓塞 (VTE) 的复合终点.
主要方法:
- 一个多中心的,开放的,随机的试验,涉及260名有症状的IDDVT的门诊患者.
- 患者被随机分配,接受12周的LMWH,然后VKA或6周的LMWH (中间剂量).
- 主要终点:复发性IDDVT,近端DVT或肺栓塞 (PE) 在6个月的随访期间的复合. 由于招募速度缓慢,研究提前停止.
主要成果:
- 主要疗效结局发生在10.8%的LMWH患者和3.8%的VKA患者中 (风险差异为0.069).
- 与VKA组相比,LMWH组 (10.0%) 的IDDVT复发率明显高 (3.1%;p=0.024).
- 临床相关的出血率在各组之间是相似的 (1.6%的LMWH与0.8%的VKA).
结论:
- 十二周的VKA治疗似乎优于6周的LMWH,可以减少IDDVT门诊患者的VTE复发风险.
- 六周的LMWH疗法显示了增加VTE复发的趋势.
- 可能需要进一步的研究来优化IDDVT的抗凝剂持续时间,考虑到研究的过早终止.
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